摘要
根据循环对称粘弹结构的循环对称性，提出了等效复约束法，使得整体循环对称粘弹结构的特征方程对各扇形子结构解耦，通过对任意一个扇形子结构的分析，就可获得整体循环对称粘弹结构的特征对。算例表明本文方法是正确可靠的，可极大地减少计算所需内存和机时，可应用于大型循环对称粘弹结构的动态特征分析。
Based on the structure cyclic symmetric property of the cyclic symmetric visco elastic structures, this paper provides a new method, equivalent complex constraint method, to uncouple the eigenvalue equation of the whole cyclic symmetric visco elastic structures by adding the cyclic symmetric conditions of the node points of the sectors. The equivalent complex constraint method selects only one cyclic symmetric visco elastic sector of the whole structure as the finite element calculating model and establishes the equivalent complex constraint eigenvalue equation of the sector. The numerical example shows that the method is correct, and effective in saving computer memory and CPU time.
出处
《机械科学与技术》
CSCD
北大核心
1997年第6期972-976,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金
航空科学基金
陕西省自然科学基金
关键词
循环对称
粘弹性
机械结构
等效复约束法
Cyclic symmetric visco elastic structure Equivalent complex constraint method
